{"transactions":[{"id":778552,"issuer":{"id":3936,"kind":"organization","name":"LifeStance Health Group, Inc.","symbol":"LFST"},"owners":[{"id":47208,"kind":"person","name":"BLACK DARREN M.","position":1,"cik":"0001843861","reported_name":"BLACK DARREN M.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-14T21:30:09.000Z","date":"2026-05-12","kind":"sale","planned":false,"acquired":false,"shares":5899661,"price":8.02,"value":47315281.22,"ownership":{"direct":false,"nature":"See Footnotes."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 3,612,708 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 2,255,726 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 25,218 shares sold by Summit Investors GE IX/VC IV, LLC, 3,371 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P. and 2,638 shares sold by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reported securities are held as follows: 14,274,150 shares in the name of Summit Partners Growth Equity Fund IX-A, L.P.; 8,912,582 shares in the name of Summit Partners Growth Equity Fund IX-B, L.P.; 99,639 shares in the name of Summit Investors GE IX/VC IV, LLC; 13,320 shares in the name of Summit Partners Entrepreneur Advisors Fund II, L.P.; and 10,424 shares in the name of Summit Investors GE IX/ VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three person investment committee, currently composed of Peter Y. Chung, Darren M. Black and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. Black and Dr. Frances disclaim beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein."}],"balance_after":23310115,"source":{"system":"sec-edgar","filing":"0001193125-26-224376","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1843861/000119312526224376/ownership.xml","form_type":"4"}},{"id":860431,"issuer":{"id":3936,"kind":"organization","name":"LifeStance Health Group, Inc.","symbol":"LFST"},"owners":[{"id":47208,"kind":"person","name":"BLACK DARREN M.","position":1,"cik":"0001843861","reported_name":"BLACK DARREN M.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-03-04T21:05:04.000Z","date":"2026-03-02","kind":"sale","planned":false,"acquired":false,"shares":4314939,"price":7.01,"value":30247722.39,"ownership":{"direct":false,"nature":"See Footnotes."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 2,642,291 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 1,649,809 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 18,444 shares sold by Summit Investors GE IX/VC IV, LLC, 2,466 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P. and 1,929 shares sold by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reported securities are held as follows: 17,886,858 shares in the name of Summit Partners Growth Equity Fund IX-A, L.P.; 11,168,308 shares in the name of Summit Partners Growth Equity Fund IX-B, L.P.; 124,857 shares in the name of Summit Investors GE IX/VC IV, LLC; 16,691 shares in the name of Summit Partners Entrepreneur Advisors Fund II, L.P.; and 13,062 shares in the name of Summit Investors GE IX/ VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three person investment committee, currently composed of Peter Y. Chung, Darren M. Black and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. Black and Dr. Frances disclaim beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein."}],"balance_after":29209776,"source":{"system":"sec-edgar","filing":"0001193125-26-091471","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1843861/000119312526091471/ownership.xml","form_type":"4"}},{"id":1059814,"issuer":{"id":3936,"kind":"organization","name":"LifeStance Health Group, Inc.","symbol":"LFST"},"owners":[{"id":47208,"kind":"person","name":"BLACK DARREN M.","position":1,"cik":"0001843861","reported_name":"BLACK DARREN M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-08-20T20:47:31.000Z","date":"2025-08-18","kind":"sale","planned":false,"acquired":false,"shares":8407643,"price":5.07,"value":42626750.01,"ownership":{"direct":false,"nature":"See Footnotes."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 5,148,494 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 3,214,648 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 35,938 shares sold by Summit Investors GE IX/VC IV, LLC, 4,804 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P. and 3,759 shares sold by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reported securities are held as follows: 20,529,149 shares in the name of Summit Partners Growth Equity Fund IX-A, L.P.; 12,818,117 shares in the name of Summit Partners Growth Equity Fund IX-B, L.P.; 143,301 shares in the name of Summit Investors GE IX/VC IV, LLC; 19,157 shares in the name of Summit Partners Entrepreneur Advisors Fund II, L.P.; and 14,991 shares in the name of Summit Investors GE IX/ VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a four person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar, Darren M. Black and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar, Mr. Black and Dr. Frances disclaim beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein."}],"balance_after":33524715,"source":{"system":"sec-edgar","filing":"0000950170-25-110459","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1843861/000095017025110459/ownership.xml","form_type":"4"}},{"id":1498729,"issuer":{"id":3936,"kind":"organization","name":"LifeStance Health Group, Inc.","symbol":"LFST"},"owners":[{"id":47208,"kind":"person","name":"BLACK DARREN M.","position":1,"cik":"0001843861","reported_name":"BLACK DARREN M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-05-29T20:55:17.000Z","date":"2024-05-24","kind":"sale","planned":false,"acquired":false,"shares":3802345,"price":5.89,"value":22395812.05,"ownership":{"direct":false,"nature":"See Footnotes."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 2,328,399 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 1,453,820 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 16,253 shares sold by Summit Investors GE IX/VC IV, LLC, 2,173 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 1,700 shares sold by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 25,677,643 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 16,032,765 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 179,239 shares held by Summit Investors GE IX/VC IV, LLC, 23,961 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 18,750 shares held by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein."}],"balance_after":41932358,"source":{"system":"sec-edgar","filing":"0000950170-24-066038","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1843861/000095017024066038/ownership.xml","form_type":"4"}},{"id":2651067,"issuer":{"id":3936,"kind":"organization","name":"LifeStance Health Group, Inc.","symbol":"LFST"},"owners":[{"id":47208,"kind":"person","name":"BLACK DARREN M.","position":1,"cik":"0001843861","reported_name":"BLACK DARREN M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-06-29T21:11:06.000Z","date":"2021-06-25","kind":"sale","acquired":false,"shares":1140704,"price":17.01,"value":19403375.04,"ownership":{"direct":false,"nature":"See Footnotes."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 698,520 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 436,146 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 4,876 shares sold by Summit Investors GE IX/VC IV, LLC, 652 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 510 shares sold by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 28,006,042 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,486,585 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 195,492 shares held by Summit Investors GE IX/VC IV, LLC, 26,134 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,450 shares held by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein."}],"balance_after":45734703,"source":{"system":"sec-edgar","filing":"0001179110-21-007116","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1843861/000117911021007116/edgar.xml","form_type":"4"}},{"id":2665389,"issuer":{"id":3936,"kind":"organization","name":"LifeStance Health Group, Inc.","symbol":"LFST"},"owners":[{"id":47208,"kind":"person","name":"BLACK DARREN M.","position":1,"cik":"0001843861","reported_name":"BLACK DARREN M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-06-16T21:34:23.000Z","date":"2021-06-14","kind":"sale","acquired":false,"shares":1368844,"price":17.01,"value":23284036.44,"ownership":{"direct":false,"nature":"See Footnotes."},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents 838,224 shares sold by Summit Partners Growth Equity Fund IX-A, L.P., 523,375 shares sold by Summit Partners Growth Equity Fund IX-B, L.P., 5,851 shares sold by Summit Investors GE IX/VC IV, LLC, 782 shares sold by Summit Partners Entrepreneur Advisors Fund II, L.P., and 612 shares sold by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 28,704,562 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 17,922,731 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 200,368 shares held by Summit Investors GE IX/VC IV, LLC, 26,786 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 20,960 shares held by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein."}],"balance_after":46875407,"source":{"system":"sec-edgar","filing":"0001179110-21-006792","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1843861/000117911021006792/edgar.xml","form_type":"4"}},{"id":2665388,"issuer":{"id":3936,"kind":"organization","name":"LifeStance Health Group, Inc.","symbol":"LFST"},"owners":[{"id":47208,"kind":"person","name":"BLACK DARREN M.","position":1,"cik":"0001843861","reported_name":"BLACK DARREN M.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-06-16T21:34:23.000Z","date":"2021-06-09","kind":"grant","acquired":true,"shares":48244251,"ownership":{"direct":false,"nature":"See Footnotes."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares received in the Organizational Transactions described in the prospectus dated June 9, 2021 relating to the Issuer's initial public offering, filed with the Securities and Exchange Commission on June 11, 2021, in exchange for partnership interests of LifeStance TopCo, L.P."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents 29,542,786 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 18,446,106 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 206,219 shares held by Summit Investors GE IX/VC IV, LLC, 27,568 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 21,572 shares held by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares received in the Organizational Transactions described in the prospectus dated June 9, 2021 relating to the Issuer's initial public offering, filed with the Securities and Exchange Commission on June 11, 2021, in exchange for partnership interests of LifeStance TopCo, L.P."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 29,542,786 shares held by Summit Partners Growth Equity Fund IX-A, L.P., 18,446,106 shares held by Summit Partners Growth Equity Fund IX-B, L.P., 206,219 shares held by Summit Investors GE IX/VC IV, LLC, 27,568 shares held by Summit Partners Entrepreneur Advisors Fund II, L.P., and 21,572 shares held by Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Darren Black is a Managing Director and Member of Summit Master Company, LLC, the general partner of Summit Partners, L.P. Summit Partners, L.P. is the managing member of Summit Partners GE IX, LLC, which is general partner of Summit Partners GE IX, LP, which is the general partner of Summit Partners Growth Equity Fund IX-A, L.P. and Summit Partners Growth Equity Fund IX-B, L.P. Summit Master Company, LLC is (i) the sole member of Summit Partners Entrepreneur Advisors GP II, LLC, which is the general partner of Summit Partners Entrepreneur Advisors Fund II, L.P. and (ii) the general partner of Summit Partners L.P., which is the manager of Summit Investors Management, LLC, which is the manager of Summit Investors GE IX/VC IV, LLC, and the general partner of Summit Investors GE IX/VC IV (UK), L.P."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Summit Master Company, LLC, as the sole member of Summit Partners Entrepreneur Advisors GP II, LLC and the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to LifeStance Health Group, Inc. Summit Partners, L.P., through a three-person investment committee, currently composed of Peter Y. Chung, Mark A. deLaar and Craig D. Frances, has voting and dispositive authority over the shares held by each of these entities and therefore beneficially owns such shares. Each of the Summit Funds, Mr. Chung, Mr. deLaar and Dr. Frances disclaim disclaims beneficial ownership of the shares, except, in each case, to the extent of such person's or entity's pecuniary interest therein."}],"balance_after":48244251,"source":{"system":"sec-edgar","filing":"0001179110-21-006792","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1843861/000117911021006792/edgar.xml","form_type":"4"}}]}